The Dacia K4M 702 is a 1,598 cc, inline-four petrol engine produced between 2000 and 2012. It belongs to the Renault-Nissan M4M engine family and shares core architecture with the K4M 694, but features revised cam profiles and intake tuning to deliver 66 kW (90 PS) and 134 Nm of torque. This naturally aspirated, multi-point fuel-injected (MPi) engine uses dual overhead camshafts (DOHC) and 16 valves, offering improved mid-range responsiveness over its 75 PS counterpart.
Fitted to higher-trim Dacia Logan and Symbol models, the K4M 702 was engineered for drivers seeking stronger acceleration and highway capability while maintaining fuel efficiency. It delivers linear power delivery ideal for mixed driving conditions and was calibrated to meet Euro 3 and Euro 4 emissions standards through a three-way catalytic converter and closed-loop lambda control (VCA UK Type Approval #VCA/EMS/3457).
One documented concern is premature wear of the hydraulic tappets, particularly in early production units (2000–2005). This issue, referenced in Renault Service Information Bulletin TSB 08-035, is linked to oil contamination and extended oil change intervals. From 2006, updated tappet materials and revised oil filter specifications were introduced to improve durability and reduce valve train noise.
Production years 2000–2005 meet Euro 3 standards; 2006–2012 models meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/3457).
The Dacia K4M 702 is a 1,598 cc inline-four petrol engine engineered for compact and entry-level vehicles (2000–2012). It combines multi-point fuel injection with dual overhead camshafts to deliver enhanced mid-range performance and drivability. Designed to meet Euro 3 and Euro 4 emissions standards, it balances mechanical robustness with increased output for improved real-world usability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol (Unleaded, 95 RON) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.0 mm × 83.6 mm | |
| Power output | 66 kW (90 PS) @ 5,500 rpm | |
| Torque | 134 Nm @ 3,000 rpm | |
| Fuel system | Multi-point fuel injection (MPi) | |
| Emissions standard | Euro 3 (pre-2006); Euro 4 (2006–2012) | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (replacement interval: 120,000 km) | |
| Oil type | SAE 10W-40 (ACEA A2/B2) | |
| Dry weight | 104 kg |
The naturally aspirated design provides smooth, predictable power delivery ideal for urban and mixed driving. The timing belt must be replaced every 120,000 km to prevent interference engine damage. SAE 10W-40 ACEA A2/B2 oil is recommended to maintain hydraulic tappet function and reduce wear. Premature tappet noise may occur in early units (2000–2005) under poor maintenance; post-2006 revisions mitigate this risk. The MPi system is robust but sensitive to poor fuel quality; use of 95 RON minimum is critical. Tappets should be inspected during major services to prevent valve float and noise.
Oil Specs: Requires SAE 10W-40 meeting ACEA A2/B2 standards (Renault Dacia Service Schedule 2008). Compatible with API SL.
Emissions: Euro 3 certification applies to pre-2006 models; Euro 4 applies to 2006–2012 models (VCA Type Approval #VCA/EMS/3457).
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel qualities meeting 95 RON minimum (Renault TIS M4M-A080).
Renault Technical Information System (TIS): Docs M4M-A080, M4M-FI01, M4M-TM01, TSB 08-035
VCA Type Approval Database (VCA/EMS/3457)
ACEA Light Duty Engine Oil Sequences 2004
The Dacia K4M 702 was used across Dacia's Logan/Symbol platforms with transverse mounting and shared within the Renault-Nissan-Mitsubishi Alliance. This engine received platform-specific adaptations-shorter intake manifolds in the Symbol and revised exhaust routing in the Logan-and from 2006 the facelifted Logan I adopted updated tappet materials and oil filtration, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the exhaust manifold (Renault TIS M4M-A080). The 8th VIN digit indicates engine type ('K' for K4M family). Pre-2006 models have a silver valve cover with black plastic cam cover; post-2006 units use an all-black cover. Critical differentiation from K4M 694: K4M 702 produces 90 PS and features revised camshaft profiles for increased torque. Service parts require model-year verification - hydraulic tappets and oil filters differ between pre- and post-2006 builds (Renault TSB 08-035).
The K4M 702's primary reliability risk is hydraulic tappet wear, with elevated incidence in sustained high-load driving. Renault internal field reports from 2005 noted a measurable increase in valve train noise and misfires in early-production units beyond 80,000 km, while VCA MOT data shows elevated hydrocarbon emissions linked to tappet degradation. High-temperature operation and infrequent oil changes accelerate wear, making oil quality and service adherence critical.
Analysis derived from Renault technical bulletins (2000-2012) and UK DVSA failure statistics (2005-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K4M702.
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